Spring-mattress.



H. AGKERMANN.

SPRING MATTRESS.

APPLICATION FILED NOV.12, 1908.

Patented June 29, 1909.

3 SHEETS--SHHEl` l.

Junin;mu

H. AGKERMANN.

SPRING MATTRESS.

APPLIOATION FILED Nov.12,19o.

Patented June 29, 1909.

3 SHEETS-SHEET R.

H. AGKERMANN.

SPRING MATTRESS.

APPLIOATION FILED Nov.1z,19oa.

Oma

m www m .nl

y {Horne} HEINRICH ACKERMAN, OF BERLIN, GERMANY.

errante-MATTRESS.

Specification of Letters Patent.

Patented June 29, 1909.

application med November 12, 1908. serial No. 462,201.

To all whom it may concern: Be it known that I, HEINRICH ACKER- MANN, a subject of the King of Prussia, and resident of 43-44 Warschauerstrasse, Berlin, German Empire, have invented certain new and useful Improvements in Spring Mattresses, of which the following is a specification.

This invention relates to spring mattresses and its object is to provide a form of mattress which shall be durable and in which the o'over em loyed will not have a tendency to fold or co lect dust and become easily torn.

According to the present invention the springs are arranged between two frames and tend to press these frames apart, but the frames are held resiliently together by means of further springswhich tend to compressv ol' the method of joining the springs to" the frame parts, Fig. 4 is a plan of the arrangement shown in Fig. 3, Fig. 5 shows a sli htly modified arrangement. Fig. 6 shows a orm of hooked link for employment between the springs. Fig. 7 is a sectional per spective view showing the mattress with coverin thereon. The upholstery or padding is 1n thisform provided on both sides. Fig. 8 shows another form of mattress in which the upholstery is provided on one side only. Fig. 9 is a front view. Fig. 10 is a sectional elevation of a modified form of holding arrangement for the covering. Fig. 11 is a perspective view of this modiiied holdm arrangement.

n carrying the invention into eHect according to the form shown the frames are com osed of rigid rods 4 which are bent in- War ly in their center portions as seen in the upper part of Fig. 1. The rods 4 form a rectangular rigid frame in which the center portions of the sides lie in a different plane to the corners. The opposite frame in Fig. lis shown as flat and composed of plain rods 5. To the raised corner parts of the upper frame there are fixed links l which are fastened to springs 2 whereby the opposite raised corners of the uper frame are connected by etween the two rigid frames ere are arranged s rings 3 wIn'ch tend to press the two .rigii frames apart; these are also provided springs 6 by which the The frames are drawn toward one another.

connecting hooked le rs shown in Fig. 6 are bent at their ends sot iat the tension acts on the hook directly in the line of the' central rod art and therefore there is no tendency for t 1e hooked end to be bent or disiigured when in use. Inclined hooks la are arranged for the corner and exterior springs. These hooks are preferably crossed Vas shown at 1a and 1b. The positions in":i\'liieh the pairs of crossed hooks are arraii ed can be seen from the double lines/in tie plan of Fig. 2. Thelower side of the yframe is provided with cross steel bands 8 shown in Figs. 3 and 4 and the springs 'are fastened to these bands at their foot inthe manner illustrated in detail in these figures.

The s rings 3 'pass through eyes formed half initI 'ie bandspr'ings S and halfin small tongues 9. These tongues are stamped from the bands S and held by means of metal bands 10 which grip in the bands 8 by passing through holes Atherein and being turned over at 10?. Instead howe'ver of fking the springs to the bands 8 in the manner shown in Figs. 3 and 4 these springs may be fixed by inverted U-bands 11, as shown in Fig. 5.

rI-hese bands are simplv passed through holes in the bands 8 and then their ends turnedA time this deformity does not produce any marked defect in the mattress as the tension urtlIer by the insertion ofthe sprin s G the cloth covering of the mattress is mue i better kept and all folding prevented. shaping the frames so that the bent in' parts lie nearer or more remote -from the opposlte frame the amount of 'compression to which the springs 3 y-may besubjected may be limited.

Instead of arranging only one of the frames with bent-in center parts, as shown' at the upper part of Fig. 1 both frames may By suitably -IOO prinvs 6 still retain the mattress tightt.

be arranged as shownl in Fig. "7. In this ligure also the mattress is shown as provided with a covering-which 'avoids all ingress of dust. The lower part of the mattress as well as the upper part in this form is provided with a covering -or padding of horsehair or the like 13. Over this padding there is laid'a layer of vcloth 14 which is sewn to the bottom layer ,of cloth 12 at 15. The upper and bottom layers 14 and 12 are also connected by means of diagonally arranged cross stitches 16. Over the padding produced as described there is passed a covering 17 which is sewn to the bottom layer 12 at the edges. At the point where the two edges meet they are bound by means of lacing 18 which engages in holes 19. In addition to the holes 19 additional holes 20 are provided in each of the parts to be placed together so as to allow of these parts being more tightly drawn. In this way all folds may b e avoided, which would be caused by long protracted and severe use. The lacing 18 and 19 is only provided at one side of the mattress while the otherl side that is the left hand side of Fig. 7, is sewn together. Over the mattress covering formed in this way a further covering 21 is provided which is sewn at the side which passes over the lacing 18 and is laced at the opposite side in the same manner as the inner covering; in this way all ingress. of dust is avoided.

In Fig. 8 the parts are arranged as described above with the exception that only the upper part of the mattress is covered with adding. The form shown in Fig. 8 thereldre may only be used on one side, whereas the form shown in Fig. 7 may be used on both sides.

Instead of the lacing described'the coverings for the mattress may be ixedw yeans of the spring catch shown in Figs. 9-11. In this form of device there is'provided a backing plate 22 having two lugs 23 which support a pivot 24. To this pivot there is fixed a plate 25 having a short gripping art 26 provided with teeth to catch the clot in the manner well known in garment-suspenders. The plate 22 is also provided with pins 31 which are adapted to grip in eyes 30 .provided on the covering. The arrange- 2. A spring mattress for bedsand the like having in combination with a covering, two rigid frames, said frames having side rods with their center parts inwardly bent with j respect to the outer surface of the mattress,

springs tending to press said frames apart and further springs tending to draw said frames toward one another and hold said first mentioned springs in compression.

3. AA spring mattress for -beds and the like having in combination with a covering, two rigid ramespsaid frames being composed of side rods withtheir center parts inwardly -bent and placed with the inwardly bent portions toward one another so that the corners Aand the oppositeedges of said halves being provided with sets ofeyes arranged in rows atdilerent distances from the edges and 'a cord adapted to engage with one orv other of the rows of eyes in each of said edges, substantially as described.

5. In combination with a spring mattress,

a coverin comprising a cloth covering arranged in alves, one half being sewn at one of its longitudinal edges to the other half, and the opposite edges of said halves being provided with sets of eyes arranged in rows at different distances from the edges and a cordk adapted to engage with one or other of the rows of eyes in each of said edges, an additional covering composed of twol parts sewn together at one edge, said sewn joint being placed over the laced joint and laced together at the other end.

6. In combination with a spring mattress, a covering comprising an inner cover coniposed of two covering parts sewn together at one pair of the joining edges, and means for detachably fastening the opposite edges and an outer covering placed over said inner cover and comprisin two parts sewn together at one pair of t eir joining edges, said sewn joint being placed over the detachable joint of the inner cover and means for detachably joining the other pair of joining edges of said outer cover.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

HEINRICH AeKEmiAN-N.

Witnesses HENRY Hasrsn, WOLDEMAR HAUPT.

lio 

